Spectral finite element

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Is it possible to export mesh from abaqus for using in Ansys Fluent?

Hi everyone, I want to mesh a part in Abaqus for further use in ANSYS Fluent because this way, it is much easier and faster to get a high-quality mesh. Is it even possible to generate a file...

15 January 2021 5,665 3 View

What are the (extrinsic) factors that influence the citation rate of a research article?

Dear RG members, Excluding the (intrinsic) factors such as quality and content of an article, what are the extrinsic factors/predicors that influence the citation rate of a research article? Is...

07 January 2021 3,410 3 View

Natural frequency extraction with ABAQUS?

I have modeled the RC beam with simply supported BC and I have got the frequency value for the case of the beam, but I have 150 modes for each analysis and I have to see them one by one to find...

05 January 2021 8,626 3 View

How high is the saturation electric field of P-E loop in Relaxor Ferroelectrics?

I have prepared a relaxor ferroelectric (KNN - BZZ solid solution) bulk sample. During P - E loop measurements, we experienced saturation electric field of about 100 kV/cm before dielectric break....

29 December 2020 9,080 3 View

What is the best way to simulate the fractional controllers?

What software do you prefer?

29 December 2020 889 3 View

What is New Next Generation Attenuation Relationships (NNGAR) and how are they different from other attenuation relationships?

Dear researchers The provisions of ASCE 7-10 states that New Next Generation Attenuation Relationships (NNGAR) has been used in the process of Probabilistic Seismic Hazard Analysis (PSHA) to...

15 November 2020 1,132 4 View

Stiffness changes of the structures due to modeling P-Delta effects in Sap2000 are more significant than OpenSees. which is more accurate?

Dear researchers The modeling of P-Delta for the structural elements (specially columns) reduce the stiffness of the structure and consequently increase the period of vibration. Now, these...

24 October 2020 7,255 5 View

Why 256x256 medical image gives me 256x256x3 in matlab?

I need a 256x256 pixel image to use it in my project. I downloaded images from the internet, but when I read the image, it stored in a 256x256x3 variable (color image format PET images). the NSCT...

11 October 2020 686 13 View

What are your suggested topics for future research?

Hello to all professors and researchers, What is your suggested topic for conducting an academic-operational thesis in one of the most up-to-date and efficient fields? Please express your proposal...

07 October 2020 395 56 View

What has been the positive effects of Covid 19 virus on the world energy demand from your point of view?

Hi every one, The power consumption of servers, computers, and Internet networks may have increased due to the increased use of virtual platform-based systems. The transportation system...

05 October 2020 9,615 5 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 View

Could anyone tell me what is the range of submillimeter wave?

There is confusion regarding the submillimeter-wave range. Many papers specify its range from 300GHz but some also consider its range from 100GHz. If I design an antenna on 122ghz what would I...

01 March 2021 516 7 View

How to eliminate Steady state error from Reinforcement learning genetic algorithm code?

The following code (see 1st 2 images attached) is used to produce PID controller values that are designed to control the system (G). The code finds the PID controller values (noted as k) by using...

28 February 2021 6,560 14 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

How to prevent ANFIS Model from negative prediction values in MATLAB?

I have input and output data set for "ANFIS modeling in MATLAB", and I am getting some negative predicted values of output in testing. However, the predicted values of output in training are...

28 February 2021 3,459 3 View

How to modify Johnson cook equation in ABAQUS?

I wanted to add an extra parameter to the existing Johnson cook equation in the ABAQUS simulation. How to add those extra parameters. Ref: A modified Johnson-Cook material model with strain...

28 February 2021 4,841 3 View

How can we simulate an hyperelastic-viscoelastic behavor with Ansys APDL?

I am working on modeling and simulation of biomecanical material behaviour, I have succeded on simulating skin using anisotropic hyperelastic material, on APDL and in our lab's finite element...

28 February 2021 552 3 View

Complex wave form in ANSYS?

Is there a way to input wave speed in a complex form on ANSYS? The wave speed I need to assign a material is 325(1+0.11i) however I have been unable to do this thus far. Failing that, is there...

27 February 2021 5,969 1 View

Ruhin Chowdhury

See this link

https://www.mathworks.com/help/pde/meshing.html

Hope it helps

A. K. M. Sharoar Jahan Choyon

Hi, I think documentaion on Meshing in MATLAB would help you.

Léo Friedrich

You should read two of the reference literature on the topic:

- ''Spectral methods in MATLAB'' by Llyod N. Trefethen

- ''Implementing Spectral Methods for Partial Differential Equations'' by David A. Kopriva.

These books come with MATLAB scripts as well.